Display device and a driving method for the same

Abstract

Disclosed are a display device and a driving method thereof in 2D/3D display field. The display device comprises: a display panel comprising a pixel electrode array, wherein each of the pixel electrode comprises at least one main pixel electrode portion (P 1 , P 2 ) and at least one secondary pixel electrode portion (P 1 ′, P 2 ′), a gate line (GE 1 , GE 2 ) is disposed between two adjacent rows of pixel electrodes, a gate line (GO 1 , GO 2 ) is disposed between portions of each pixel electrode, a data line (DO) is disposed between two adjacent columns of pixel electrodes, and all portions of the pixel electrodes in the same column are connected to a same data line (DO); and a gate driving device ( 3 - 2 ) for inputting a gate shift pulse and a control signal to the display panel, so that for the display panel, in a 2D mode, all portions of the pixel electrodes are inputted with data signals, and in a 3D mode, a portion of each pixel electrode is inputted a data signal while another portion is not inputted with the data signal but used to form a black stripe. In the display device and the driving method for the same, black stripes are formed in the display panel so that the display device has larger viewing angle without affecting the visibility and luminance of the display device.

The invention claimed is: 
     
       1. A display device, comprising:
 a display panel comprising a pixel electrode array, wherein each of the pixel electrode comprises at least one main pixel electrode portion and at least one secondary pixel electrode portion, a gate line is disposed between two adjacent rows of pixel electrodes, a gate line is disposed between portions of each pixel electrode, a data line is disposed between two adjacent columns of pixel electrodes, and all portions of the pixel electrodes in the same column are connected to a same data line; and 
 a gate driving device for inputting a gate shift pulse and a control signal to the display panel, so that for the display panel, in a 2D mode, all portions of the pixel electrodes are inputted with data signals, and in a 3D mode, a portion of each pixel electrode is inputted a data signal while another portion is not inputted with the data signal but used to form a black stripe; 
 wherein the gate driving device comprises a shift pulse generating circuit and a control circuit, the control circuit comprises:
 control thin film transistors, and a source output of each control thin film transistor acts as a gate signal for the main pixel electrode portions in each row or the secondary pixel electrode portions in each row, gates of the control thin film transistors are connected with the outputs of the corresponding shift pulse generating circuits; and 
 at least two control signal lines, wherein the at least two signal lines are divided into two groups, one group is an image display control signal line connected to drains of the control thin film transistors corresponding to the pixel electrodes for displaying a 3D image, the other group is a black stripe control signal line connected to drains of the control thin film transistors corresponding to the pixel electrode for forming black strips. 
 
 
     
     
       2. The display device according to  claim 1 , wherein, in the 2D mode, all the portions of each pixel electrode are used to display a 2D image, and in the 3D mode, one portion of each pixel electrode is used to display a 3D image while other portion is used to form the black stripe. 
     
     
       3. The display device according to  claim 1 , wherein the shift pulse generating circuit is a multi-level gate driver for an array substrate, an output of each level of the multi-level gate driver for an array substrate is connected with the gates of all the control thin film transistors corresponding to portions of the same pixel electrode. 
     
     
       4. The display device according to  claim 1 , wherein the display device further comprises a data driving device, in the 2D mode, the data driving device inputs a 2D image data voltage to all the pixel electrodes, and in the 3D mode, the data driving device inputs a 3D image data voltage to corresponding portions of each of the pixel electrode for displaying a 3D image. 
     
     
       5. The display device according to  claim 4 , wherein the display device further comprises a control device for inputting a control signal to the gate driving device and the date driving device, in the 2D mode, the control signal controls the gate driving device to input data signals to all the pixel electrodes and control the data driving device to input 2D image data voltages to all the pixel electrodes;
 in the 3D mode, the control signal controls the gate driving device to input the data signals to a portion of each pixel electrode while not to another portion of the pixel electrode, and controls the data driving device to input a 3D image data voltage to the corresponding portion of each of the pixel electrode for displaying a 3D image. 
 
     
     
       6. The display device according to  claim 1 , wherein each of the pixel electrode comprises one main pixel electrode portion and one secondary pixel electrode portion, in a 3D mode, the main pixel electrode portion is used to display a 3D image and the secondary pixel electrode portion is used to form a black stripe. 
     
     
       7. A driving method for a display device according to  claim 1 , comprising: inputting a control signal according to property of the image to be displayed, so that in a 2D mode, all portions of each pixel electrode on the display panel are used to display a 2D image, and in a 3D mode, a portion of each pixel electrode is used for a black stripe. 
     
     
       8. The driving method according to  claim 7 , wherein in the 2D mode, a data driving device inputs a 2D image data voltage to a data line, a control circuit inputs a high level signal to all control signal lines, and all portions of the pixel electrodes in each row are turned on or turned off simultaneously according to an output signal from a shift pulse generating circuit;
 in the 3D mode, during a first blanking time, the control circuit inputs a low level signal to a image display control signal line and inputs a high level signal to a black stripe control signal line, the data driving device inputs a common level signal to the data line; after the first blanking time, the control circuit inputs a high level signal to the image display control signal line and inputs a low level signal to the black stripe control signal line, and the date driving device inputs a 3D image data voltage to the data line. 
 
     
     
       9. The driving method according to  claim 7 , wherein in the 2D mode, the data driving device inputs a 2D image data voltage to the data line, a control circuit inputs a high level signal to all control signal lines, and all portions of the pixel electrodes in each row are turned on or turned off simultaneously according to an output signal from a shift pulse generating circuit;
 when the display device is switched to the 3D mode, the control circuit inputs a high level signal to all control signal lines, the data driving device inputs a common level signal to the data line; after a second blanking time, the control circuit inputs a high level signal to the image display control signal line and inputs a low level signal to the black stripe control signal line, and the date driving device inputs a 3D image data voltage to the data line.